Understanding Equilibrium in Chemistry

What happens to the equilibrium position when the concentration of a reactant is increased?

• The reaction stops completely.

• The equilibrium position remains unchanged.

• The equilibrium position shifts to the right.

• The equilibrium position shifts to the left.

How does decreasing the concentration of a product affect the equilibrium position?

• The equilibrium position shifts to the left, increasing product concentration.

• The equilibrium position remains unchanged regardless of product concentration.

• The equilibrium position shifts to the right, favoring product formation.

• The equilibrium position shifts to the left, favoring reactant formation.

If the concentration of a reactant is decreased, what is the expected shift in equilibrium?

• The equilibrium shifts upward.

• The equilibrium shifts to the right.

• The equilibrium remains unchanged.

• The equilibrium shifts to the left.

Describe the effect of adding an inert gas to a system at equilibrium.

• The equilibrium shifts to the right.

• The reaction rate increases significantly.

• No effect on the position of equilibrium.

• The equilibrium shifts to the left.

How does temperature affect the position of equilibrium in an exothermic reaction?

• Decreasing temperature shifts the equilibrium to the left in an exothermic reaction.

• Temperature has no effect on the position of equilibrium in an exothermic reaction.

• Increasing temperature shifts the equilibrium to the left in an exothermic reaction.

• Increasing temperature shifts the equilibrium to the right in an exothermic reaction.

What is the effect of increasing temperature on the equilibrium position of an endothermic reaction?

• The equilibrium position shifts to the right, favoring the reactants.

• The equilibrium position shifts to the right, favoring the products.

• Temperature has no effect on the equilibrium position of an endothermic reaction.

• The equilibrium position shifts to the left, favoring the reactants.

Explain how a decrease in temperature affects the equilibrium constant for an exothermic reaction.

• The equilibrium constant decreases.

• The equilibrium constant remains unchanged.

• The equilibrium constant becomes zero.

• The equilibrium constant increases.

What is the relationship between temperature and the equilibrium constant?

• The equilibrium constant is constant regardless of temperature.

• Temperature has no effect on the equilibrium constant for any reaction.

• The equilibrium constant varies with temperature; it decreases for exothermic reactions and increases for endothermic reactions.

• The equilibrium constant only increases for exothermic reactions.

How does increasing pressure affect the equilibrium position of a gaseous reaction with fewer moles of gas on the product side?

• The equilibrium position remains unchanged regardless of pressure.

• The equilibrium shifts to the right, favoring the products.

• The equilibrium shifts to the left, favoring the reactants.

• The equilibrium shifts to the left, favoring the products.

What happens to the equilibrium position if the volume of the container is increased?

• The equilibrium position shifts towards the side with more moles of gas.

• The equilibrium position remains unchanged.

• The equilibrium position shifts towards the side with fewer moles of gas.

• The equilibrium position moves to the center of the container.